101-0681 Rabbit Semiconductor, 101-0681 Datasheet - Page 107
![KIT DEVELOPMENT RCM3700 INT'L](/photos/37/58/375880/101-0681_sml.jpg)
101-0681
Manufacturer Part Number
101-0681
Description
KIT DEVELOPMENT RCM3700 INT'L
Manufacturer
Rabbit Semiconductor
Series
RabbitCore 3000r
Type
MPU Moduler
Datasheet
1.101-0522.pdf
(169 pages)
Specifications of 101-0681
Contents
RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
Processor To Be Evaluated
Rabbit 3000
Interface Type
Ethernet
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
4.75 V to 5.25 V
For Use With/related Products
RCM3700
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
101-681
101-681
101-681
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
101-0681
Manufacturer:
Rabbit
Quantity:
201
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B.1.6.2 RS-485
The RCM3700 Prototyping Board has one RS-485 serial channel, which is connected to
the Rabbit 3000 Serial Port E through an RS-485 transceiver. The half-duplex communi-
cation uses an output from PF5 on the Rabbit 3000 to control the transmit enable on the
communication line. Using this scheme a strict master/slave relationship must exist
between devices to insure that no two devices attempt to drive the bus simultaneously.
Serial Port E is configured in software for RS-485 as follows.
The configuration shown above is based on circular buffers. RS-485 configuration may
also be done using functions from the
The RCM3700 Prototyping Boards with RCM3700 modules installed can be used in an
RS-485 multidrop network spanning up to 1200 m (4000 ft), and there can be as many as
32 attached devices. Connect the 485+ to 485+ and 485– to 485– using single twisted-pair
wires as shown in Figure B-8. Note that a common ground is recommended.
RabbitCore RCM3700 User’s Manual
#define ser485open serEopen
#define ser485close serEclose
#define ser485wrFlush serEwrFlush
#define ser485rdFlush serErdFlush
#define ser485putc serEputc
#define ser485getc serEgetc
#define EINBUFSIZE
#define EOUTBUFSIZE 15
Figure B-8. RCM3700 Multidrop Network
15
PACKET.LIB
library.
105
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